M1701_POS_Pro_Manual V1.0 2012-06-12
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6.
TROUBLESHOOTING
Please follow the guidelines below for common problems:
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Check UPS input plug and wiring.
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Check UPS input voltage.
Please prepare the information as follows for service personnel:
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UPS model number and serial number
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Description of problem(s) in detail.
6.1.
General Problems
Problems Possible
causes
Solution
UPS has no reaction while
AC power is connected
Breaker at back panel open
No AC input
UPS fault
Battery failure
Replace Fuse/Switch breaker on
Check AC power
Call for service
Call service center to replace batteries
UPS has no reaction while
AC power is connected, yet
starts after pushing power
on/off switch
Breaker at back panel open
No AC input
UPS AC detecting circuit fail
Switch breaker
Check AC power
Call for service
UPS goes into back-up mode
while connected to AC power
Utility voltage or frequency
abnormal
UPS AC detecting circuit failure
Check AC power
Call for service
Battery can not provide
normal back-up power in the
event of a blackout
Battery deteriorated
Batteries not fully charged
Battery charger damaged
Charge batteries and reset
If that doesn’t work call for service
Fault LED lit
Inverter fault
Over temperature
Battery over voltage
DC bus fault
Overload fault
Call for service
Check load status
After AC connected to UPS,
alarm sounds short and fast
beeps and UPS shuts down
Abnormal utility power
Check input power
